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Finding the Fourth Proportional to 279,937,114.80, 419,905,672.20 and 249,326,113.20

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Solution

The fourth proportional to 279,937,114.80, 419,905,672.20 and 249,326,113.20 is: 373,989,169.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,114.80 : 419,905,672.20 = 249,326,113.20 : x
  2. Step 2: Convert to fraction form
    279,937,114.80/419,905,672.20 = 249,326,113.20/x
  3. Step 3: Cross multiply
    279,937,114.80x = 419,905,672.20 × 249,326,113.20
  4. Step 4: Simplify right side
    279,937,114.80x = 104,693,449,160,259,280
  5. Step 5: Solve for x
    x = 104,693,449,160,259,280/279,937,114.80
  6. Step 6: Final answer
    x = 373,989,169.80

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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.