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Finding the Fourth Proportional to 517,572.04, 714,247.86 and 291,217.72

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Solution

The fourth proportional to 517,572.04, 714,247.86 and 291,217.72 is: 401,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,572.04 : 714,247.86 = 291,217.72 : x
  2. Step 2: Convert to fraction form
    517,572.04/714,247.86 = 291,217.72/x
  3. Step 3: Cross multiply
    517,572.04x = 714,247.86 × 291,217.72
  4. Step 4: Simplify right side
    517,572.04x = 208,001,633,304.08
  5. Step 5: Solve for x
    x = 208,001,633,304.08/517,572.04
  6. Step 6: Final answer
    x = 401,879.58

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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.