Home / 287,271.20-430,906.80-145,553.60

Finding the Fourth Proportional to 287,271.20, 430,906.80 and 145,553.60

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Solution

The fourth proportional to 287,271.20, 430,906.80 and 145,553.60 is: 218,330.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,271.20 : 430,906.80 = 145,553.60 : x
  2. Step 2: Convert to fraction form
    287,271.20/430,906.80 = 145,553.60/x
  3. Step 3: Cross multiply
    287,271.20x = 430,906.80 × 145,553.60
  4. Step 4: Simplify right side
    287,271.20x = 62,720,036,004.48
  5. Step 5: Solve for x
    x = 62,720,036,004.48/287,271.20
  6. Step 6: Final answer
    x = 218,330.40

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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.