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Finding the Fourth Proportional to 438,360.78, 657,749.18 and 303,632.02

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Solution

The fourth proportional to 438,360.78, 657,749.18 and 303,632.02 is: 455,592.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,360.78 : 657,749.18 = 303,632.02 : x
  2. Step 2: Convert to fraction form
    438,360.78/657,749.18 = 303,632.02/x
  3. Step 3: Cross multiply
    438,360.78x = 657,749.18 × 303,632.02
  4. Step 4: Simplify right side
    438,360.78x = 199,713,712,176.74
  5. Step 5: Solve for x
    x = 199,713,712,176.74/438,360.78
  6. Step 6: Final answer
    x = 455,592.11

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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.