Home / 279,754,487.90-386,054,430.23-154,303,989.65

Finding the Fourth Proportional to 279,754,487.90, 386,054,430.23 and 154,303,989.65

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Solution

The fourth proportional to 279,754,487.90, 386,054,430.23 and 154,303,989.65 is: 212,935,775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,754,487.90 : 386,054,430.23 = 154,303,989.65 : x
  2. Step 2: Convert to fraction form
    279,754,487.90/386,054,430.23 = 154,303,989.65/x
  3. Step 3: Cross multiply
    279,754,487.90x = 386,054,430.23 × 154,303,989.65
  4. Step 4: Simplify right side
    279,754,487.90x = 59,569,738,803,844,784
  5. Step 5: Solve for x
    x = 59,569,738,803,844,784/279,754,487.90
  6. Step 6: Final answer
    x = 212,935,775.41

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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.