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Finding the Fourth Proportional to 154,498.30, 216,919.70 and 154,498.30

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Solution

The fourth proportional to 154,498.30, 216,919.70 and 154,498.30 is: 216,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,498.30 : 216,919.70 = 154,498.30 : x
  2. Step 2: Convert to fraction form
    154,498.30/216,919.70 = 154,498.30/x
  3. Step 3: Cross multiply
    154,498.30x = 216,919.70 × 154,498.30
  4. Step 4: Simplify right side
    154,498.30x = 33,513,724,886.51
  5. Step 5: Solve for x
    x = 33,513,724,886.51/154,498.30
  6. Step 6: Final answer
    x = 216,919.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.