Home / 261,333,197.73-392,058,853.02-86,455,821.51

Finding the Fourth Proportional to 261,333,197.73, 392,058,853.02 and 86,455,821.51

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Solution

The fourth proportional to 261,333,197.73, 392,058,853.02 and 86,455,821.51 is: 129,703,269.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,333,197.73 : 392,058,853.02 = 86,455,821.51 : x
  2. Step 2: Convert to fraction form
    261,333,197.73/392,058,853.02 = 86,455,821.51/x
  3. Step 3: Cross multiply
    261,333,197.73x = 392,058,853.02 × 86,455,821.51
  4. Step 4: Simplify right side
    261,333,197.73x = 33,895,770,218,112,444
  5. Step 5: Solve for x
    x = 33,895,770,218,112,444/261,333,197.73
  6. Step 6: Final answer
    x = 129,703,269.67

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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.