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Finding the Fourth Proportional to 359,341.20, 539,206.20 and 149,000.40

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Solution

The fourth proportional to 359,341.20, 539,206.20 and 149,000.40 is: 223,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,341.20 : 539,206.20 = 149,000.40 : x
  2. Step 2: Convert to fraction form
    359,341.20/539,206.20 = 149,000.40/x
  3. Step 3: Cross multiply
    359,341.20x = 539,206.20 × 149,000.40
  4. Step 4: Simplify right side
    359,341.20x = 80,341,939,482.48
  5. Step 5: Solve for x
    x = 80,341,939,482.48/359,341.20
  6. Step 6: Final answer
    x = 223,581.21

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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.