Home / 342,278.20-513,407.70-155,289.40

Finding the Fourth Proportional to 342,278.20, 513,407.70 and 155,289.40

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Solution

The fourth proportional to 342,278.20, 513,407.70 and 155,289.40 is: 232,929.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,278.20 : 513,407.70 = 155,289.40 : x
  2. Step 2: Convert to fraction form
    342,278.20/513,407.70 = 155,289.40/x
  3. Step 3: Cross multiply
    342,278.20x = 513,407.70 × 155,289.40
  4. Step 4: Simplify right side
    342,278.20x = 79,726,773,688.38
  5. Step 5: Solve for x
    x = 79,726,773,688.38/342,278.20
  6. Step 6: Final answer
    x = 232,929.74

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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.