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Finding the Fourth Proportional to 369,778.80, 554,886.90 and 243,783.30

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Solution

The fourth proportional to 369,778.80, 554,886.90 and 243,783.30 is: 365,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,778.80 : 554,886.90 = 243,783.30 : x
  2. Step 2: Convert to fraction form
    369,778.80/554,886.90 = 243,783.30/x
  3. Step 3: Cross multiply
    369,778.80x = 554,886.90 × 243,783.30
  4. Step 4: Simplify right side
    369,778.80x = 135,272,159,608.77
  5. Step 5: Solve for x
    x = 135,272,159,608.77/369,778.80
  6. Step 6: Final answer
    x = 365,819.13

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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.