Home / 281,037,690.72-387,832,107.04-153,886,411.04

Finding the Fourth Proportional to 281,037,690.72, 387,832,107.04 and 153,886,411.04

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Solution

The fourth proportional to 281,037,690.72, 387,832,107.04 and 153,886,411.04 is: 212,363,298.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,037,690.72 : 387,832,107.04 = 153,886,411.04 : x
  2. Step 2: Convert to fraction form
    281,037,690.72/387,832,107.04 = 153,886,411.04/x
  3. Step 3: Cross multiply
    281,037,690.72x = 387,832,107.04 × 153,886,411.04
  4. Step 4: Simplify right side
    281,037,690.72x = 59,682,091,036,142,840
  5. Step 5: Solve for x
    x = 59,682,091,036,142,840/281,037,690.72
  6. Step 6: Final answer
    x = 212,363,298.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.