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Finding the Fourth Proportional to 347,801.10, 521,701.65 and 310,403.40

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Solution

The fourth proportional to 347,801.10, 521,701.65 and 310,403.40 is: 465,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,801.10 : 521,701.65 = 310,403.40 : x
  2. Step 2: Convert to fraction form
    347,801.10/521,701.65 = 310,403.40/x
  3. Step 3: Cross multiply
    347,801.10x = 521,701.65 × 310,403.40
  4. Step 4: Simplify right side
    347,801.10x = 161,937,965,945.61
  5. Step 5: Solve for x
    x = 161,937,965,945.61/347,801.10
  6. Step 6: Final answer
    x = 465,605.10

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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.