Home / 306,820.50-423,451.17-172,710.42

Finding the Fourth Proportional to 306,820.50, 423,451.17 and 172,710.42

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Solution

The fourth proportional to 306,820.50, 423,451.17 and 172,710.42 is: 238,362.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,820.50 : 423,451.17 = 172,710.42 : x
  2. Step 2: Convert to fraction form
    306,820.50/423,451.17 = 172,710.42/x
  3. Step 3: Cross multiply
    306,820.50x = 423,451.17 × 172,710.42
  4. Step 4: Simplify right side
    306,820.50x = 73,134,429,420.19
  5. Step 5: Solve for x
    x = 73,134,429,420.19/306,820.50
  6. Step 6: Final answer
    x = 238,362.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.