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Finding the Fourth Proportional to 445,355.20, 668,097.60 and 145,763.20

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Solution

The fourth proportional to 445,355.20, 668,097.60 and 145,763.20 is: 218,666.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,355.20 : 668,097.60 = 145,763.20 : x
  2. Step 2: Convert to fraction form
    445,355.20/668,097.60 = 145,763.20/x
  3. Step 3: Cross multiply
    445,355.20x = 668,097.60 × 145,763.20
  4. Step 4: Simplify right side
    445,355.20x = 97,384,044,088.32
  5. Step 5: Solve for x
    x = 97,384,044,088.32/445,355.20
  6. Step 6: Final answer
    x = 218,666.01

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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.