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Finding the Fourth Proportional to 532,205.60, 734,416.76 and 290,486.21

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Solution

The fourth proportional to 532,205.60, 734,416.76 and 290,486.21 is: 400,856.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,205.60 : 734,416.76 = 290,486.21 : x
  2. Step 2: Convert to fraction form
    532,205.60/734,416.76 = 290,486.21/x
  3. Step 3: Cross multiply
    532,205.60x = 734,416.76 × 290,486.21
  4. Step 4: Simplify right side
    532,205.60x = 213,337,939,720.45
  5. Step 5: Solve for x
    x = 213,337,939,720.45/532,205.60
  6. Step 6: Final answer
    x = 400,856.25

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1.5x scale

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.