Home / 291,831.40-402,927.78-220,292.20

Finding the Fourth Proportional to 291,831.40, 402,927.78 and 220,292.20

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Solution

The fourth proportional to 291,831.40, 402,927.78 and 220,292.20 is: 304,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,831.40 : 402,927.78 = 220,292.20 : x
  2. Step 2: Convert to fraction form
    291,831.40/402,927.78 = 220,292.20/x
  3. Step 3: Cross multiply
    291,831.40x = 402,927.78 × 220,292.20
  4. Step 4: Simplify right side
    291,831.40x = 88,761,847,097.32
  5. Step 5: Solve for x
    x = 88,761,847,097.32/291,831.40
  6. Step 6: Final answer
    x = 304,154.55

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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.