Home / 388,666,655.73-536,360,010.27-212,455,349.10

Finding the Fourth Proportional to 388,666,655.73, 536,360,010.27 and 212,455,349.10

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Solution

The fourth proportional to 388,666,655.73, 536,360,010.27 and 212,455,349.10 is: 293,188,395.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,666,655.73 : 536,360,010.27 = 212,455,349.10 : x
  2. Step 2: Convert to fraction form
    388,666,655.73/536,360,010.27 = 212,455,349.10/x
  3. Step 3: Cross multiply
    388,666,655.73x = 536,360,010.27 × 212,455,349.10
  4. Step 4: Simplify right side
    388,666,655.73x = 113,952,553,225,192,432
  5. Step 5: Solve for x
    x = 113,952,553,225,192,432/388,666,655.73
  6. Step 6: Final answer
    x = 293,188,395.62

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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.