Home / 387,130.60-579,918.30-268,935.40

Finding the Fourth Proportional to 387,130.60, 579,918.30 and 268,935.40

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Solution

The fourth proportional to 387,130.60, 579,918.30 and 268,935.40 is: 402,862.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,130.60 : 579,918.30 = 268,935.40 : x
  2. Step 2: Convert to fraction form
    387,130.60/579,918.30 = 268,935.40/x
  3. Step 3: Cross multiply
    387,130.60x = 579,918.30 × 268,935.40
  4. Step 4: Simplify right side
    387,130.60x = 155,960,559,977.82
  5. Step 5: Solve for x
    x = 155,960,559,977.82/387,130.60
  6. Step 6: Final answer
    x = 402,862.91

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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.