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Finding the Fourth Proportional to 425,303.04, 637,931.52 and 129,792

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Solution

The fourth proportional to 425,303.04, 637,931.52 and 129,792 is: 194,680.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,303.04 : 637,931.52 = 129,792 : x
  2. Step 2: Convert to fraction form
    425,303.04/637,931.52 = 129,792/x
  3. Step 3: Cross multiply
    425,303.04x = 637,931.52 × 129,792
  4. Step 4: Simplify right side
    425,303.04x = 82,798,407,843.84
  5. Step 5: Solve for x
    x = 82,798,407,843.84/425,303.04
  6. Step 6: Final answer
    x = 194,680.97

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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.