Home / 312,011,320.02-430,575,233.13-172,781,913.66

Finding the Fourth Proportional to 312,011,320.02, 430,575,233.13 and 172,781,913.66

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Solution

The fourth proportional to 312,011,320.02, 430,575,233.13 and 172,781,913.66 is: 238,438,825.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,011,320.02 : 430,575,233.13 = 172,781,913.66 : x
  2. Step 2: Convert to fraction form
    312,011,320.02/430,575,233.13 = 172,781,913.66/x
  3. Step 3: Cross multiply
    312,011,320.02x = 430,575,233.13 × 172,781,913.66
  4. Step 4: Simplify right side
    312,011,320.02x = 74,395,612,754,802,032
  5. Step 5: Solve for x
    x = 74,395,612,754,802,032/312,011,320.02
  6. Step 6: Final answer
    x = 238,438,825.71

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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.