Home / 287,381,931.62-396,759,340.73-188,435,287.40

Finding the Fourth Proportional to 287,381,931.62, 396,759,340.73 and 188,435,287.40

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Solution

The fourth proportional to 287,381,931.62, 396,759,340.73 and 188,435,287.40 is: 260,153,656.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,381,931.62 : 396,759,340.73 = 188,435,287.40 : x
  2. Step 2: Convert to fraction form
    287,381,931.62/396,759,340.73 = 188,435,287.40/x
  3. Step 3: Cross multiply
    287,381,931.62x = 396,759,340.73 × 188,435,287.40
  4. Step 4: Simplify right side
    287,381,931.62x = 74,763,460,397,579,376
  5. Step 5: Solve for x
    x = 74,763,460,397,579,376/287,381,931.62
  6. Step 6: Final answer
    x = 260,153,656.76

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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.