Home / 318,934,840.40-478,626,209.40-137,312,363.60

Finding the Fourth Proportional to 318,934,840.40, 478,626,209.40 and 137,312,363.60

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Solution

The fourth proportional to 318,934,840.40, 478,626,209.40 and 137,312,363.60 is: 206,064,963.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,934,840.40 : 478,626,209.40 = 137,312,363.60 : x
  2. Step 2: Convert to fraction form
    318,934,840.40/478,626,209.40 = 137,312,363.60/x
  3. Step 3: Cross multiply
    318,934,840.40x = 478,626,209.40 × 137,312,363.60
  4. Step 4: Simplify right side
    318,934,840.40x = 65,721,296,093,622,528
  5. Step 5: Solve for x
    x = 65,721,296,093,622,528/318,934,840.40
  6. Step 6: Final answer
    x = 206,064,963.02

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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.