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Finding the Fourth Proportional to 229,509.04, 316,752.12 and 128,907.04

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Solution

The fourth proportional to 229,509.04, 316,752.12 and 128,907.04 is: 177,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,509.04 : 316,752.12 = 128,907.04 : x
  2. Step 2: Convert to fraction form
    229,509.04/316,752.12 = 128,907.04/x
  3. Step 3: Cross multiply
    229,509.04x = 316,752.12 × 128,907.04
  4. Step 4: Simplify right side
    229,509.04x = 40,831,578,202.92
  5. Step 5: Solve for x
    x = 40,831,578,202.92/229,509.04
  6. Step 6: Final answer
    x = 177,908.37

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1.5x scale

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.