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Finding the Fourth Proportional to 315,545.80, 435,207.06 and 202,377.16

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Solution

The fourth proportional to 315,545.80, 435,207.06 and 202,377.16 is: 279,122.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,545.80 : 435,207.06 = 202,377.16 : x
  2. Step 2: Convert to fraction form
    315,545.80/435,207.06 = 202,377.16/x
  3. Step 3: Cross multiply
    315,545.80x = 435,207.06 × 202,377.16
  4. Step 4: Simplify right side
    315,545.80x = 88,075,968,814.75
  5. Step 5: Solve for x
    x = 88,075,968,814.75/315,545.80
  6. Step 6: Final answer
    x = 279,122.61

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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.