Home / 420,284.16-579,968.51-239,040.18

Finding the Fourth Proportional to 420,284.16, 579,968.51 and 239,040.18

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Solution

The fourth proportional to 420,284.16, 579,968.51 and 239,040.18 is: 329,862.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,284.16 : 579,968.51 = 239,040.18 : x
  2. Step 2: Convert to fraction form
    420,284.16/579,968.51 = 239,040.18/x
  3. Step 3: Cross multiply
    420,284.16x = 579,968.51 × 239,040.18
  4. Step 4: Simplify right side
    420,284.16x = 138,635,775,829.53
  5. Step 5: Solve for x
    x = 138,635,775,829.53/420,284.16
  6. Step 6: Final answer
    x = 329,862.01

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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.