Home / 304,918,439.72-420,785,968.20-172,759,176.68

Finding the Fourth Proportional to 304,918,439.72, 420,785,968.20 and 172,759,176.68

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Solution

The fourth proportional to 304,918,439.72, 420,785,968.20 and 172,759,176.68 is: 238,406,826.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,918,439.72 : 420,785,968.20 = 172,759,176.68 : x
  2. Step 2: Convert to fraction form
    304,918,439.72/420,785,968.20 = 172,759,176.68/x
  3. Step 3: Cross multiply
    304,918,439.72x = 420,785,968.20 × 172,759,176.68
  4. Step 4: Simplify right side
    304,918,439.72x = 72,694,637,424,728,656
  5. Step 5: Solve for x
    x = 72,694,637,424,728,656/304,918,439.72
  6. Step 6: Final answer
    x = 238,406,826.07

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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.