Home / 318,072,387.60-477,108,581.40-257,606,211.60

Finding the Fourth Proportional to 318,072,387.60, 477,108,581.40 and 257,606,211.60

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Solution

The fourth proportional to 318,072,387.60, 477,108,581.40 and 257,606,211.60 is: 386,409,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,072,387.60 : 477,108,581.40 = 257,606,211.60 : x
  2. Step 2: Convert to fraction form
    318,072,387.60/477,108,581.40 = 257,606,211.60/x
  3. Step 3: Cross multiply
    318,072,387.60x = 477,108,581.40 × 257,606,211.60
  4. Step 4: Simplify right side
    318,072,387.60x = 122,906,134,176,304,208
  5. Step 5: Solve for x
    x = 122,906,134,176,304,208/318,072,387.60
  6. Step 6: Final answer
    x = 386,409,317.40

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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.