Home / 386,335-533,316.90-243,305.20

Finding the Fourth Proportional to 386,335, 533,316.90 and 243,305.20

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Solution

The fourth proportional to 386,335, 533,316.90 and 243,305.20 is: 335,871.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,335 : 533,316.90 = 243,305.20 : x
  2. Step 2: Convert to fraction form
    386,335/533,316.90 = 243,305.20/x
  3. Step 3: Cross multiply
    386,335x = 533,316.90 × 243,305.20
  4. Step 4: Simplify right side
    386,335x = 129,758,775,017.88
  5. Step 5: Solve for x
    x = 129,758,775,017.88/386,335
  6. Step 6: Final answer
    x = 335,871.14

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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.