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Finding the Fourth Proportional to 390,027.20, 583,874.40 and 366,958.40

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Solution

The fourth proportional to 390,027.20, 583,874.40 and 366,958.40 is: 549,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,027.20 : 583,874.40 = 366,958.40 : x
  2. Step 2: Convert to fraction form
    390,027.20/583,874.40 = 366,958.40/x
  3. Step 3: Cross multiply
    390,027.20x = 583,874.40 × 366,958.40
  4. Step 4: Simplify right side
    390,027.20x = 214,257,615,624.96
  5. Step 5: Solve for x
    x = 214,257,615,624.96/390,027.20
  6. Step 6: Final answer
    x = 549,340.19

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1.5x scale

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.