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Finding the Fourth Proportional to 359,332.20, 538,803.90 and 148,991.40

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Solution

The fourth proportional to 359,332.20, 538,803.90 and 148,991.40 is: 223,406.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,332.20 : 538,803.90 = 148,991.40 : x
  2. Step 2: Convert to fraction form
    359,332.20/538,803.90 = 148,991.40/x
  3. Step 3: Cross multiply
    359,332.20x = 538,803.90 × 148,991.40
  4. Step 4: Simplify right side
    359,332.20x = 80,277,147,386.46
  5. Step 5: Solve for x
    x = 80,277,147,386.46/359,332.20
  6. Step 6: Final answer
    x = 223,406.50

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1.5x scale

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.