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Finding the Fourth Proportional to 368,403.48, 508,397.58 and 217,510.20

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Solution

The fourth proportional to 368,403.48, 508,397.58 and 217,510.20 is: 300,164.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,403.48 : 508,397.58 = 217,510.20 : x
  2. Step 2: Convert to fraction form
    368,403.48/508,397.58 = 217,510.20/x
  3. Step 3: Cross multiply
    368,403.48x = 508,397.58 × 217,510.20
  4. Step 4: Simplify right side
    368,403.48x = 110,581,659,305.32
  5. Step 5: Solve for x
    x = 110,581,659,305.32/368,403.48
  6. Step 6: Final answer
    x = 300,164.54

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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.