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Finding the Fourth Proportional to 402,372.90, 602,575.20 and 191,764.80

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Solution

The fourth proportional to 402,372.90, 602,575.20 and 191,764.80 is: 287,178.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,372.90 : 602,575.20 = 191,764.80 : x
  2. Step 2: Convert to fraction form
    402,372.90/602,575.20 = 191,764.80/x
  3. Step 3: Cross multiply
    402,372.90x = 602,575.20 × 191,764.80
  4. Step 4: Simplify right side
    402,372.90x = 115,552,712,712.96
  5. Step 5: Solve for x
    x = 115,552,712,712.96/402,372.90
  6. Step 6: Final answer
    x = 287,178.17

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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.