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Finding the Fourth Proportional to 353,353.60, 528,734.40 and 260,041.60

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Solution

The fourth proportional to 353,353.60, 528,734.40 and 260,041.60 is: 389,108.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,353.60 : 528,734.40 = 260,041.60 : x
  2. Step 2: Convert to fraction form
    353,353.60/528,734.40 = 260,041.60/x
  3. Step 3: Cross multiply
    353,353.60x = 528,734.40 × 260,041.60
  4. Step 4: Simplify right side
    353,353.60x = 137,492,939,351.04
  5. Step 5: Solve for x
    x = 137,492,939,351.04/353,353.60
  6. Step 6: Final answer
    x = 389,108.64

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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.