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Finding the Fourth Proportional to 508,672.80, 763,130.70 and 153,690.30

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Solution

The fourth proportional to 508,672.80, 763,130.70 and 153,690.30 is: 230,572.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,672.80 : 763,130.70 = 153,690.30 : x
  2. Step 2: Convert to fraction form
    508,672.80/763,130.70 = 153,690.30/x
  3. Step 3: Cross multiply
    508,672.80x = 763,130.70 × 153,690.30
  4. Step 4: Simplify right side
    508,672.80x = 117,285,786,222.21
  5. Step 5: Solve for x
    x = 117,285,786,222.21/508,672.80
  6. Step 6: Final answer
    x = 230,572.16

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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.