Home / 315,521.15-435,417.46-172,280.17

Finding the Fourth Proportional to 315,521.15, 435,417.46 and 172,280.17

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Solution

The fourth proportional to 315,521.15, 435,417.46 and 172,280.17 is: 237,745.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,521.15 : 435,417.46 = 172,280.17 : x
  2. Step 2: Convert to fraction form
    315,521.15/435,417.46 = 172,280.17/x
  3. Step 3: Cross multiply
    315,521.15x = 435,417.46 × 172,280.17
  4. Step 4: Simplify right side
    315,521.15x = 75,013,792,178.65
  5. Step 5: Solve for x
    x = 75,013,792,178.65/315,521.15
  6. Step 6: Final answer
    x = 237,745.69

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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.