Home / 347,921.60-522,055.20-137,566.40

Finding the Fourth Proportional to 347,921.60, 522,055.20 and 137,566.40

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Solution

The fourth proportional to 347,921.60, 522,055.20 and 137,566.40 is: 206,417.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,921.60 : 522,055.20 = 137,566.40 : x
  2. Step 2: Convert to fraction form
    347,921.60/522,055.20 = 137,566.40/x
  3. Step 3: Cross multiply
    347,921.60x = 522,055.20 × 137,566.40
  4. Step 4: Simplify right side
    347,921.60x = 71,817,254,465.28
  5. Step 5: Solve for x
    x = 71,817,254,465.28/347,921.60
  6. Step 6: Final answer
    x = 206,417.92

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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.