Home / 349,621.60-524,086.80-138,978.40

Finding the Fourth Proportional to 349,621.60, 524,086.80 and 138,978.40

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Solution

The fourth proportional to 349,621.60, 524,086.80 and 138,978.40 is: 208,330.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,621.60 : 524,086.80 = 138,978.40 : x
  2. Step 2: Convert to fraction form
    349,621.60/524,086.80 = 138,978.40/x
  3. Step 3: Cross multiply
    349,621.60x = 524,086.80 × 138,978.40
  4. Step 4: Simplify right side
    349,621.60x = 72,836,744,925.12
  5. Step 5: Solve for x
    x = 72,836,744,925.12/349,621.60
  6. Step 6: Final answer
    x = 208,330.22

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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.