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Finding the Fourth Proportional to 651,422.40, 977,230.80 and 230,665.20

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Solution

The fourth proportional to 651,422.40, 977,230.80 and 230,665.20 is: 346,032.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,422.40 : 977,230.80 = 230,665.20 : x
  2. Step 2: Convert to fraction form
    651,422.40/977,230.80 = 230,665.20/x
  3. Step 3: Cross multiply
    651,422.40x = 977,230.80 × 230,665.20
  4. Step 4: Simplify right side
    651,422.40x = 225,413,137,928.16
  5. Step 5: Solve for x
    x = 225,413,137,928.16/651,422.40
  6. Step 6: Final answer
    x = 346,032.22

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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.