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Finding the Fourth Proportional to 287,980.88, 432,117.08 and 194,289.80

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Solution

The fourth proportional to 287,980.88, 432,117.08 and 194,289.80 is: 291,533.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,980.88 : 432,117.08 = 194,289.80 : x
  2. Step 2: Convert to fraction form
    287,980.88/432,117.08 = 194,289.80/x
  3. Step 3: Cross multiply
    287,980.88x = 432,117.08 × 194,289.80
  4. Step 4: Simplify right side
    287,980.88x = 83,955,941,049.78
  5. Step 5: Solve for x
    x = 83,955,941,049.78/287,980.88
  6. Step 6: Final answer
    x = 291,533.04

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1.5x scale

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.