Home / 389,916.40-584,874.60-212,769.40

Finding the Fourth Proportional to 389,916.40, 584,874.60 and 212,769.40

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Solution

The fourth proportional to 389,916.40, 584,874.60 and 212,769.40 is: 319,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,916.40 : 584,874.60 = 212,769.40 : x
  2. Step 2: Convert to fraction form
    389,916.40/584,874.60 = 212,769.40/x
  3. Step 3: Cross multiply
    389,916.40x = 584,874.60 × 212,769.40
  4. Step 4: Simplify right side
    389,916.40x = 124,443,417,717.24
  5. Step 5: Solve for x
    x = 124,443,417,717.24/389,916.40
  6. Step 6: Final answer
    x = 319,154.10

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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.