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Finding the Fourth Proportional to 445,419.60, 668,210.40 and 145,816.80

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Solution

The fourth proportional to 445,419.60, 668,210.40 and 145,816.80 is: 218,751.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,419.60 : 668,210.40 = 145,816.80 : x
  2. Step 2: Convert to fraction form
    445,419.60/668,210.40 = 145,816.80/x
  3. Step 3: Cross multiply
    445,419.60x = 668,210.40 × 145,816.80
  4. Step 4: Simplify right side
    445,419.60x = 97,436,302,254.72
  5. Step 5: Solve for x
    x = 97,436,302,254.72/445,419.60
  6. Step 6: Final answer
    x = 218,751.72

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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.