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Finding the Fourth Proportional to 440,415.67, 660,637.21 and 209,554.07

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Solution

The fourth proportional to 440,415.67, 660,637.21 and 209,554.07 is: 314,337.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,415.67 : 660,637.21 = 209,554.07 : x
  2. Step 2: Convert to fraction form
    440,415.67/660,637.21 = 209,554.07/x
  3. Step 3: Cross multiply
    440,415.67x = 660,637.21 × 209,554.07
  4. Step 4: Simplify right side
    440,415.67x = 138,439,216,148.95
  5. Step 5: Solve for x
    x = 138,439,216,148.95/440,415.67
  6. Step 6: Final answer
    x = 314,337.63

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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.