Home / 307,931.90-461,801.85-121,000.70

Finding the Fourth Proportional to 307,931.90, 461,801.85 and 121,000.70

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Solution

The fourth proportional to 307,931.90, 461,801.85 and 121,000.70 is: 181,463.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,931.90 : 461,801.85 = 121,000.70 : x
  2. Step 2: Convert to fraction form
    307,931.90/461,801.85 = 121,000.70/x
  3. Step 3: Cross multiply
    307,931.90x = 461,801.85 × 121,000.70
  4. Step 4: Simplify right side
    307,931.90x = 55,878,347,111.30
  5. Step 5: Solve for x
    x = 55,878,347,111.30/307,931.90
  6. Step 6: Final answer
    x = 181,463.33

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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.