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Finding the Fourth Proportional to 258,328.40, 387,492.60 and 169,854.80

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Solution

The fourth proportional to 258,328.40, 387,492.60 and 169,854.80 is: 254,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,328.40 : 387,492.60 = 169,854.80 : x
  2. Step 2: Convert to fraction form
    258,328.40/387,492.60 = 169,854.80/x
  3. Step 3: Cross multiply
    258,328.40x = 387,492.60 × 169,854.80
  4. Step 4: Simplify right side
    258,328.40x = 65,817,478,074.48
  5. Step 5: Solve for x
    x = 65,817,478,074.48/258,328.40
  6. Step 6: Final answer
    x = 254,782.20

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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.