Home / 385,178.26-531,545.60-215,412.40

Finding the Fourth Proportional to 385,178.26, 531,545.60 and 215,412.40

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Solution

The fourth proportional to 385,178.26, 531,545.60 and 215,412.40 is: 297,268.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,178.26 : 531,545.60 = 215,412.40 : x
  2. Step 2: Convert to fraction form
    385,178.26/531,545.60 = 215,412.40/x
  3. Step 3: Cross multiply
    385,178.26x = 531,545.60 × 215,412.40
  4. Step 4: Simplify right side
    385,178.26x = 114,501,513,405.44
  5. Step 5: Solve for x
    x = 114,501,513,405.44/385,178.26
  6. Step 6: Final answer
    x = 297,268.89

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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.