Home / 438,008.20-657,012.30-302,705.80

Finding the Fourth Proportional to 438,008.20, 657,012.30 and 302,705.80

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Solution

The fourth proportional to 438,008.20, 657,012.30 and 302,705.80 is: 454,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,008.20 : 657,012.30 = 302,705.80 : x
  2. Step 2: Convert to fraction form
    438,008.20/657,012.30 = 302,705.80/x
  3. Step 3: Cross multiply
    438,008.20x = 657,012.30 × 302,705.80
  4. Step 4: Simplify right side
    438,008.20x = 198,881,433,881.34
  5. Step 5: Solve for x
    x = 198,881,433,881.34/438,008.20
  6. Step 6: Final answer
    x = 454,058.70

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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.