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Finding the Fourth Proportional to 209,952,387.20, 314,928,580.80 and 144,195,420.80

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Solution

The fourth proportional to 209,952,387.20, 314,928,580.80 and 144,195,420.80 is: 216,293,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,387.20 : 314,928,580.80 = 144,195,420.80 : x
  2. Step 2: Convert to fraction form
    209,952,387.20/314,928,580.80 = 144,195,420.80/x
  3. Step 3: Cross multiply
    209,952,387.20x = 314,928,580.80 × 144,195,420.80
  4. Step 4: Simplify right side
    209,952,387.20x = 45,411,259,230,402,808
  5. Step 5: Solve for x
    x = 45,411,259,230,402,808/209,952,387.20
  6. Step 6: Final answer
    x = 216,293,131.20

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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.