Home / 209,952,917.20-314,929,375.80-145,238,712.40

Finding the Fourth Proportional to 209,952,917.20, 314,929,375.80 and 145,238,712.40

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Solution

The fourth proportional to 209,952,917.20, 314,929,375.80 and 145,238,712.40 is: 217,858,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,917.20 : 314,929,375.80 = 145,238,712.40 : x
  2. Step 2: Convert to fraction form
    209,952,917.20/314,929,375.80 = 145,238,712.40/x
  3. Step 3: Cross multiply
    209,952,917.20x = 314,929,375.80 × 145,238,712.40
  4. Step 4: Simplify right side
    209,952,917.20x = 45,739,937,038,127,720
  5. Step 5: Solve for x
    x = 45,739,937,038,127,720/209,952,917.20
  6. Step 6: Final answer
    x = 217,858,068.60

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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.