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Finding the Fourth Proportional to 359,543.23, 495,982.80 and 291,636.88

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Solution

The fourth proportional to 359,543.23, 495,982.80 and 291,636.88 is: 402,307.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,543.23 : 495,982.80 = 291,636.88 : x
  2. Step 2: Convert to fraction form
    359,543.23/495,982.80 = 291,636.88/x
  3. Step 3: Cross multiply
    359,543.23x = 495,982.80 × 291,636.88
  4. Step 4: Simplify right side
    359,543.23x = 144,646,875,085.71
  5. Step 5: Solve for x
    x = 144,646,875,085.71/359,543.23
  6. Step 6: Final answer
    x = 402,307.33

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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.