Home / 279,938,723.40-419,908,085.10-172,294,000.20

Finding the Fourth Proportional to 279,938,723.40, 419,908,085.10 and 172,294,000.20

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Solution

The fourth proportional to 279,938,723.40, 419,908,085.10 and 172,294,000.20 is: 258,441,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,723.40 : 419,908,085.10 = 172,294,000.20 : x
  2. Step 2: Convert to fraction form
    279,938,723.40/419,908,085.10 = 172,294,000.20/x
  3. Step 3: Cross multiply
    279,938,723.40x = 419,908,085.10 × 172,294,000.20
  4. Step 4: Simplify right side
    279,938,723.40x = 72,347,643,698,201,024
  5. Step 5: Solve for x
    x = 72,347,643,698,201,024/279,938,723.40
  6. Step 6: Final answer
    x = 258,441,000.30

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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.