Home / 209,921,291.20-314,940,919.20-102,219,428.80

Finding the Fourth Proportional to 209,921,291.20, 314,940,919.20 and 102,219,428.80

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Solution

The fourth proportional to 209,921,291.20, 314,940,919.20 and 102,219,428.80 is: 153,357,864.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,921,291.20 : 314,940,919.20 = 102,219,428.80 : x
  2. Step 2: Convert to fraction form
    209,921,291.20/314,940,919.20 = 102,219,428.80/x
  3. Step 3: Cross multiply
    209,921,291.20x = 314,940,919.20 × 102,219,428.80
  4. Step 4: Simplify right side
    209,921,291.20x = 32,193,080,866,370,952
  5. Step 5: Solve for x
    x = 32,193,080,866,370,952/209,921,291.20
  6. Step 6: Final answer
    x = 153,357,864.19

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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.