Home / 305,729.02-421,918.18-176,663.21

Finding the Fourth Proportional to 305,729.02, 421,918.18 and 176,663.21

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Solution

The fourth proportional to 305,729.02, 421,918.18 and 176,663.21 is: 243,802.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,729.02 : 421,918.18 = 176,663.21 : x
  2. Step 2: Convert to fraction form
    305,729.02/421,918.18 = 176,663.21/x
  3. Step 3: Cross multiply
    305,729.02x = 421,918.18 × 176,663.21
  4. Step 4: Simplify right side
    305,729.02x = 74,537,420,649.30
  5. Step 5: Solve for x
    x = 74,537,420,649.30/305,729.02
  6. Step 6: Final answer
    x = 243,802.24

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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.