Home / 385,211.60-531,588.96-215,445.60

Finding the Fourth Proportional to 385,211.60, 531,588.96 and 215,445.60

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Solution

The fourth proportional to 385,211.60, 531,588.96 and 215,445.60 is: 297,313.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,211.60 : 531,588.96 = 215,445.60 : x
  2. Step 2: Convert to fraction form
    385,211.60/531,588.96 = 215,445.60/x
  3. Step 3: Cross multiply
    385,211.60x = 531,588.96 × 215,445.60
  4. Step 4: Simplify right side
    385,211.60x = 114,528,502,440.58
  5. Step 5: Solve for x
    x = 114,528,502,440.58/385,211.60
  6. Step 6: Final answer
    x = 297,313.22

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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.