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Finding the Fourth Proportional to 502,459.40, 753,458.70 and 221,832.20

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Solution

The fourth proportional to 502,459.40, 753,458.70 and 221,832.20 is: 332,646.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,459.40 : 753,458.70 = 221,832.20 : x
  2. Step 2: Convert to fraction form
    502,459.40/753,458.70 = 221,832.20/x
  3. Step 3: Cross multiply
    502,459.40x = 753,458.70 × 221,832.20
  4. Step 4: Simplify right side
    502,459.40x = 167,141,401,030.14
  5. Step 5: Solve for x
    x = 167,141,401,030.14/502,459.40
  6. Step 6: Final answer
    x = 332,646.58

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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.