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Finding the Fourth Proportional to 319,085.70, 478,628.55 and 177,368.10

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Solution

The fourth proportional to 319,085.70, 478,628.55 and 177,368.10 is: 266,052.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,085.70 : 478,628.55 = 177,368.10 : x
  2. Step 2: Convert to fraction form
    319,085.70/478,628.55 = 177,368.10/x
  3. Step 3: Cross multiply
    319,085.70x = 478,628.55 × 177,368.10
  4. Step 4: Simplify right side
    319,085.70x = 84,893,436,519.26
  5. Step 5: Solve for x
    x = 84,893,436,519.26/319,085.70
  6. Step 6: Final answer
    x = 266,052.15

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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.