Home / 307,916.40-461,778.60-120,985.20

Finding the Fourth Proportional to 307,916.40, 461,778.60 and 120,985.20

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Solution

The fourth proportional to 307,916.40, 461,778.60 and 120,985.20 is: 181,440.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,916.40 : 461,778.60 = 120,985.20 : x
  2. Step 2: Convert to fraction form
    307,916.40/461,778.60 = 120,985.20/x
  3. Step 3: Cross multiply
    307,916.40x = 461,778.60 × 120,985.20
  4. Step 4: Simplify right side
    307,916.40x = 55,868,376,276.72
  5. Step 5: Solve for x
    x = 55,868,376,276.72/307,916.40
  6. Step 6: Final answer
    x = 181,440.08

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1.5x scale

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.