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Finding the Fourth Proportional to 359,384.80, 538,364.40 and 315,061.60

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Solution

The fourth proportional to 359,384.80, 538,364.40 and 315,061.60 is: 471,967.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,384.80 : 538,364.40 = 315,061.60 : x
  2. Step 2: Convert to fraction form
    359,384.80/538,364.40 = 315,061.60/x
  3. Step 3: Cross multiply
    359,384.80x = 538,364.40 × 315,061.60
  4. Step 4: Simplify right side
    359,384.80x = 169,617,949,247.04
  5. Step 5: Solve for x
    x = 169,617,949,247.04/359,384.80
  6. Step 6: Final answer
    x = 471,967.51

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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.