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Finding the Fourth Proportional to 243,005.70, 364,508.55 and 168,210.30

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Solution

The fourth proportional to 243,005.70, 364,508.55 and 168,210.30 is: 252,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,005.70 : 364,508.55 = 168,210.30 : x
  2. Step 2: Convert to fraction form
    243,005.70/364,508.55 = 168,210.30/x
  3. Step 3: Cross multiply
    243,005.70x = 364,508.55 × 168,210.30
  4. Step 4: Simplify right side
    243,005.70x = 61,314,092,548.07
  5. Step 5: Solve for x
    x = 61,314,092,548.07/243,005.70
  6. Step 6: Final answer
    x = 252,315.45

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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.