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Finding the Fourth Proportional to 349,972.64, 525,042.40 and 113,315.40

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Solution

The fourth proportional to 349,972.64, 525,042.40 and 113,315.40 is: 170,000.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,972.64 : 525,042.40 = 113,315.40 : x
  2. Step 2: Convert to fraction form
    349,972.64/525,042.40 = 113,315.40/x
  3. Step 3: Cross multiply
    349,972.64x = 525,042.40 × 113,315.40
  4. Step 4: Simplify right side
    349,972.64x = 59,495,389,572.96
  5. Step 5: Solve for x
    x = 59,495,389,572.96/349,972.64
  6. Step 6: Final answer
    x = 170,000.12

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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.