Home / 440,420.18-660,643.98-209,558.58

Finding the Fourth Proportional to 440,420.18, 660,643.98 and 209,558.58

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Solution

The fourth proportional to 440,420.18, 660,643.98 and 209,558.58 is: 314,344.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,420.18 : 660,643.98 = 209,558.58 : x
  2. Step 2: Convert to fraction form
    440,420.18/660,643.98 = 209,558.58/x
  3. Step 3: Cross multiply
    440,420.18x = 660,643.98 × 209,558.58
  4. Step 4: Simplify right side
    440,420.18x = 138,443,614,334.35
  5. Step 5: Solve for x
    x = 138,443,614,334.35/440,420.18
  6. Step 6: Final answer
    x = 314,344.39

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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.