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Finding the Fourth Proportional to 145,999.60, 218,999.40 and 145,999.60

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Solution

The fourth proportional to 145,999.60, 218,999.40 and 145,999.60 is: 218,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,999.60 : 218,999.40 = 145,999.60 : x
  2. Step 2: Convert to fraction form
    145,999.60/218,999.40 = 145,999.60/x
  3. Step 3: Cross multiply
    145,999.60x = 218,999.40 × 145,999.60
  4. Step 4: Simplify right side
    145,999.60x = 31,973,824,800.24
  5. Step 5: Solve for x
    x = 31,973,824,800.24/145,999.60
  6. Step 6: Final answer
    x = 218,999.40

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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.