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Finding the Fourth Proportional to 305,001.96, 420,903.78 and 169,038.18

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Solution

The fourth proportional to 305,001.96, 420,903.78 and 169,038.18 is: 233,273.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,001.96 : 420,903.78 = 169,038.18 : x
  2. Step 2: Convert to fraction form
    305,001.96/420,903.78 = 169,038.18/x
  3. Step 3: Cross multiply
    305,001.96x = 420,903.78 × 169,038.18
  4. Step 4: Simplify right side
    305,001.96x = 71,148,808,926.32
  5. Step 5: Solve for x
    x = 71,148,808,926.32/305,001.96
  6. Step 6: Final answer
    x = 233,273.28

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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.