Home / 387,167.31-534,074.36-243,678.24

Finding the Fourth Proportional to 387,167.31, 534,074.36 and 243,678.24

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Solution

The fourth proportional to 387,167.31, 534,074.36 and 243,678.24 is: 336,139.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,167.31 : 534,074.36 = 243,678.24 : x
  2. Step 2: Convert to fraction form
    387,167.31/534,074.36 = 243,678.24/x
  3. Step 3: Cross multiply
    387,167.31x = 534,074.36 × 243,678.24
  4. Step 4: Simplify right side
    387,167.31x = 130,142,298,855.54
  5. Step 5: Solve for x
    x = 130,142,298,855.54/387,167.31
  6. Step 6: Final answer
    x = 336,139.69

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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.