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Finding the Fourth Proportional to 359,272.20, 537,986.70 and 342,683.40

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Solution

The fourth proportional to 359,272.20, 537,986.70 and 342,683.40 is: 513,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,272.20 : 537,986.70 = 342,683.40 : x
  2. Step 2: Convert to fraction form
    359,272.20/537,986.70 = 342,683.40/x
  3. Step 3: Cross multiply
    359,272.20x = 537,986.70 × 342,683.40
  4. Step 4: Simplify right side
    359,272.20x = 184,359,111,510.78
  5. Step 5: Solve for x
    x = 184,359,111,510.78/359,272.20
  6. Step 6: Final answer
    x = 513,146.05

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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.