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Finding the Fourth Proportional to 243,242.64, 335,490.06 and 209,307.96

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Solution

The fourth proportional to 243,242.64, 335,490.06 and 209,307.96 is: 288,685.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,242.64 : 335,490.06 = 209,307.96 : x
  2. Step 2: Convert to fraction form
    243,242.64/335,490.06 = 209,307.96/x
  3. Step 3: Cross multiply
    243,242.64x = 335,490.06 × 209,307.96
  4. Step 4: Simplify right side
    243,242.64x = 70,220,740,058.88
  5. Step 5: Solve for x
    x = 70,220,740,058.88/243,242.64
  6. Step 6: Final answer
    x = 288,685.98

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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.