Home / 346,985.20-520,672.20-147,271.60

Finding the Fourth Proportional to 346,985.20, 520,672.20 and 147,271.60

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Solution

The fourth proportional to 346,985.20, 520,672.20 and 147,271.60 is: 220,989.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,985.20 : 520,672.20 = 147,271.60 : x
  2. Step 2: Convert to fraction form
    346,985.20/520,672.20 = 147,271.60/x
  3. Step 3: Cross multiply
    346,985.20x = 520,672.20 × 147,271.60
  4. Step 4: Simplify right side
    346,985.20x = 76,680,227,969.52
  5. Step 5: Solve for x
    x = 76,680,227,969.52/346,985.20
  6. Step 6: Final answer
    x = 220,989.91

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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.