Home / 315,475,020.20-473,212,530.30-261,727,308.20

Finding the Fourth Proportional to 315,475,020.20, 473,212,530.30 and 261,727,308.20

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Solution

The fourth proportional to 315,475,020.20, 473,212,530.30 and 261,727,308.20 is: 392,590,962.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,475,020.20 : 473,212,530.30 = 261,727,308.20 : x
  2. Step 2: Convert to fraction form
    315,475,020.20/473,212,530.30 = 261,727,308.20/x
  3. Step 3: Cross multiply
    315,475,020.20x = 473,212,530.30 × 261,727,308.20
  4. Step 4: Simplify right side
    315,475,020.20x = 123,852,641,761,929,936
  5. Step 5: Solve for x
    x = 123,852,641,761,929,936/315,475,020.20
  6. Step 6: Final answer
    x = 392,590,962.30

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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.