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Finding the Fourth Proportional to 243,017.80, 364,526.70 and 209,192.20

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Solution

The fourth proportional to 243,017.80, 364,526.70 and 209,192.20 is: 313,788.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,017.80 : 364,526.70 = 209,192.20 : x
  2. Step 2: Convert to fraction form
    243,017.80/364,526.70 = 209,192.20/x
  3. Step 3: Cross multiply
    243,017.80x = 364,526.70 × 209,192.20
  4. Step 4: Simplify right side
    243,017.80x = 76,256,142,331.74
  5. Step 5: Solve for x
    x = 76,256,142,331.74/243,017.80
  6. Step 6: Final answer
    x = 313,788.30

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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.