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Finding the Fourth Proportional to 245,836,353.80, 368,754,530.70 and 123,392,347.40

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Solution

The fourth proportional to 245,836,353.80, 368,754,530.70 and 123,392,347.40 is: 185,088,521.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,836,353.80 : 368,754,530.70 = 123,392,347.40 : x
  2. Step 2: Convert to fraction form
    245,836,353.80/368,754,530.70 = 123,392,347.40/x
  3. Step 3: Cross multiply
    245,836,353.80x = 368,754,530.70 × 123,392,347.40
  4. Step 4: Simplify right side
    245,836,353.80x = 45,501,487,157,458,368
  5. Step 5: Solve for x
    x = 45,501,487,157,458,368/245,836,353.80
  6. Step 6: Final answer
    x = 185,088,521.10

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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.