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Finding the Fourth Proportional to 549,661.28, 758,360.40 and 307,911.20

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Solution

The fourth proportional to 549,661.28, 758,360.40 and 307,911.20 is: 424,821.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,661.28 : 758,360.40 = 307,911.20 : x
  2. Step 2: Convert to fraction form
    549,661.28/758,360.40 = 307,911.20/x
  3. Step 3: Cross multiply
    549,661.28x = 758,360.40 × 307,911.20
  4. Step 4: Simplify right side
    549,661.28x = 233,507,660,796.48
  5. Step 5: Solve for x
    x = 233,507,660,796.48/549,661.28
  6. Step 6: Final answer
    x = 424,821.01

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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.