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Finding the Fourth Proportional to 229,039.92, 316,075.16 and 128,437.92

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Solution

The fourth proportional to 229,039.92, 316,075.16 and 128,437.92 is: 177,244.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,039.92 : 316,075.16 = 128,437.92 : x
  2. Step 2: Convert to fraction form
    229,039.92/316,075.16 = 128,437.92/x
  3. Step 3: Cross multiply
    229,039.92x = 316,075.16 × 128,437.92
  4. Step 4: Simplify right side
    229,039.92x = 40,596,036,435.16
  5. Step 5: Solve for x
    x = 40,596,036,435.16/229,039.92
  6. Step 6: Final answer
    x = 177,244.37

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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.