Home / 287,598.54-431,398.90-87,918.16

Finding the Fourth Proportional to 287,598.54, 431,398.90 and 87,918.16

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Solution

The fourth proportional to 287,598.54, 431,398.90 and 87,918.16 is: 131,877.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,598.54 : 431,398.90 = 87,918.16 : x
  2. Step 2: Convert to fraction form
    287,598.54/431,398.90 = 87,918.16/x
  3. Step 3: Cross multiply
    287,598.54x = 431,398.90 × 87,918.16
  4. Step 4: Simplify right side
    287,598.54x = 37,927,797,514.02
  5. Step 5: Solve for x
    x = 37,927,797,514.02/287,598.54
  6. Step 6: Final answer
    x = 131,877.57

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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.