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Finding the Fourth Proportional to 390,019.20, 583,862.40 and 366,950.40

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Solution

The fourth proportional to 390,019.20, 583,862.40 and 366,950.40 is: 549,328.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,019.20 : 583,862.40 = 366,950.40 : x
  2. Step 2: Convert to fraction form
    390,019.20/583,862.40 = 366,950.40/x
  3. Step 3: Cross multiply
    390,019.20x = 583,862.40 × 366,950.40
  4. Step 4: Simplify right side
    390,019.20x = 214,248,541,224.96
  5. Step 5: Solve for x
    x = 214,248,541,224.96/390,019.20
  6. Step 6: Final answer
    x = 549,328.19

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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.