Home / 280,312.20-386,831.16-152,987.76

Finding the Fourth Proportional to 280,312.20, 386,831.16 and 152,987.76

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Solution

The fourth proportional to 280,312.20, 386,831.16 and 152,987.76 is: 211,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,312.20 : 386,831.16 = 152,987.76 : x
  2. Step 2: Convert to fraction form
    280,312.20/386,831.16 = 152,987.76/x
  3. Step 3: Cross multiply
    280,312.20x = 386,831.16 × 152,987.76
  4. Step 4: Simplify right side
    280,312.20x = 59,180,432,666.60
  5. Step 5: Solve for x
    x = 59,180,432,666.60/280,312.20
  6. Step 6: Final answer
    x = 211,123.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.