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Finding the Fourth Proportional to 157,490.40, 236,235.60 and 155,416.80

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Solution

The fourth proportional to 157,490.40, 236,235.60 and 155,416.80 is: 233,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,490.40 : 236,235.60 = 155,416.80 : x
  2. Step 2: Convert to fraction form
    157,490.40/236,235.60 = 155,416.80/x
  3. Step 3: Cross multiply
    157,490.40x = 236,235.60 × 155,416.80
  4. Step 4: Simplify right side
    157,490.40x = 36,714,980,998.08
  5. Step 5: Solve for x
    x = 36,714,980,998.08/157,490.40
  6. Step 6: Final answer
    x = 233,125.20

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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.