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Finding the Fourth Proportional to 429,387.12, 592,510.92 and 238,379.76

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Solution

The fourth proportional to 429,387.12, 592,510.92 and 238,379.76 is: 328,940.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,387.12 : 592,510.92 = 238,379.76 : x
  2. Step 2: Convert to fraction form
    429,387.12/592,510.92 = 238,379.76/x
  3. Step 3: Cross multiply
    429,387.12x = 592,510.92 × 238,379.76
  4. Step 4: Simplify right side
    429,387.12x = 141,242,610,906.98
  5. Step 5: Solve for x
    x = 141,242,610,906.98/429,387.12
  6. Step 6: Final answer
    x = 328,940.03

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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.