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Finding the Fourth Proportional to 390,029.20, 583,877.40 and 366,960.40

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Solution

The fourth proportional to 390,029.20, 583,877.40 and 366,960.40 is: 549,343.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,029.20 : 583,877.40 = 366,960.40 : x
  2. Step 2: Convert to fraction form
    390,029.20/583,877.40 = 366,960.40/x
  3. Step 3: Cross multiply
    390,029.20x = 583,877.40 × 366,960.40
  4. Step 4: Simplify right side
    390,029.20x = 214,259,884,254.96
  5. Step 5: Solve for x
    x = 214,259,884,254.96/390,029.20
  6. Step 6: Final answer
    x = 549,343.19

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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.