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Finding the Fourth Proportional to 472,302.57, 651,778.54 and 309,071.04

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Solution

The fourth proportional to 472,302.57, 651,778.54 and 309,071.04 is: 426,518.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,302.57 : 651,778.54 = 309,071.04 : x
  2. Step 2: Convert to fraction form
    472,302.57/651,778.54 = 309,071.04/x
  3. Step 3: Cross multiply
    472,302.57x = 651,778.54 × 309,071.04
  4. Step 4: Simplify right side
    472,302.57x = 201,445,870,434.80
  5. Step 5: Solve for x
    x = 201,445,870,434.80/472,302.57
  6. Step 6: Final answer
    x = 426,518.68

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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.