Home / 388,790.16-583,097.75-139,472.16

Finding the Fourth Proportional to 388,790.16, 583,097.75 and 139,472.16

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Solution

The fourth proportional to 388,790.16, 583,097.75 and 139,472.16 is: 209,176.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,790.16 : 583,097.75 = 139,472.16 : x
  2. Step 2: Convert to fraction form
    388,790.16/583,097.75 = 139,472.16/x
  3. Step 3: Cross multiply
    388,790.16x = 583,097.75 × 139,472.16
  4. Step 4: Simplify right side
    388,790.16x = 81,325,904,387.14
  5. Step 5: Solve for x
    x = 81,325,904,387.14/388,790.16
  6. Step 6: Final answer
    x = 209,176.86

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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.