Home / 261,097.28-390,798.60-140,987.24

Finding the Fourth Proportional to 261,097.28, 390,798.60 and 140,987.24

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Solution

The fourth proportional to 261,097.28, 390,798.60 and 140,987.24 is: 211,023.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,097.28 : 390,798.60 = 140,987.24 : x
  2. Step 2: Convert to fraction form
    261,097.28/390,798.60 = 140,987.24/x
  3. Step 3: Cross multiply
    261,097.28x = 390,798.60 × 140,987.24
  4. Step 4: Simplify right side
    261,097.28x = 55,097,616,009.86
  5. Step 5: Solve for x
    x = 55,097,616,009.86/261,097.28
  6. Step 6: Final answer
    x = 211,023.32

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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.