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Finding the Fourth Proportional to 407,329,656.80, 610,994,485.20 and 148,553,319.20

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Solution

The fourth proportional to 407,329,656.80, 610,994,485.20 and 148,553,319.20 is: 222,829,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,329,656.80 : 610,994,485.20 = 148,553,319.20 : x
  2. Step 2: Convert to fraction form
    407,329,656.80/610,994,485.20 = 148,553,319.20/x
  3. Step 3: Cross multiply
    407,329,656.80x = 610,994,485.20 × 148,553,319.20
  4. Step 4: Simplify right side
    407,329,656.80x = 90,765,258,789,355,280
  5. Step 5: Solve for x
    x = 90,765,258,789,355,280/407,329,656.80
  6. Step 6: Final answer
    x = 222,829,978.80

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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.