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Finding the Fourth Proportional to 209,952,547.20, 314,928,820.80 and 133,047,129.60

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Solution

The fourth proportional to 209,952,547.20, 314,928,820.80 and 133,047,129.60 is: 199,570,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,547.20 : 314,928,820.80 = 133,047,129.60 : x
  2. Step 2: Convert to fraction form
    209,952,547.20/314,928,820.80 = 133,047,129.60/x
  3. Step 3: Cross multiply
    209,952,547.20x = 314,928,820.80 × 133,047,129.60
  4. Step 4: Simplify right side
    209,952,547.20x = 41,900,375,635,752,776
  5. Step 5: Solve for x
    x = 41,900,375,635,752,776/209,952,547.20
  6. Step 6: Final answer
    x = 199,570,694.40

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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.