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Finding the Fourth Proportional to 253,692,022.60, 380,538,033.90 and 144,852,905.80

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Solution

The fourth proportional to 253,692,022.60, 380,538,033.90 and 144,852,905.80 is: 217,279,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,692,022.60 : 380,538,033.90 = 144,852,905.80 : x
  2. Step 2: Convert to fraction form
    253,692,022.60/380,538,033.90 = 144,852,905.80/x
  3. Step 3: Cross multiply
    253,692,022.60x = 380,538,033.90 × 144,852,905.80
  4. Step 4: Simplify right side
    253,692,022.60x = 55,122,039,977,833,904
  5. Step 5: Solve for x
    x = 55,122,039,977,833,904/253,692,022.60
  6. Step 6: Final answer
    x = 217,279,358.70

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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.