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Finding the Fourth Proportional to 369,968.70, 554,953.05 and 319,230.30

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Solution

The fourth proportional to 369,968.70, 554,953.05 and 319,230.30 is: 478,845.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,968.70 : 554,953.05 = 319,230.30 : x
  2. Step 2: Convert to fraction form
    369,968.70/554,953.05 = 319,230.30/x
  3. Step 3: Cross multiply
    369,968.70x = 554,953.05 × 319,230.30
  4. Step 4: Simplify right side
    369,968.70x = 177,157,828,637.42
  5. Step 5: Solve for x
    x = 177,157,828,637.42/369,968.70
  6. Step 6: Final answer
    x = 478,845.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.