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Finding the Fourth Proportional to 224,265.72, 309,389.58 and 128,750.52

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Solution

The fourth proportional to 224,265.72, 309,389.58 and 128,750.52 is: 177,619.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,265.72 : 309,389.58 = 128,750.52 : x
  2. Step 2: Convert to fraction form
    224,265.72/309,389.58 = 128,750.52/x
  3. Step 3: Cross multiply
    224,265.72x = 309,389.58 × 128,750.52
  4. Step 4: Simplify right side
    224,265.72x = 39,834,069,307.58
  5. Step 5: Solve for x
    x = 39,834,069,307.58/224,265.72
  6. Step 6: Final answer
    x = 177,619.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.