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Finding the Fourth Proportional to 287,235.16, 430,852.40 and 76,867.62

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Solution

The fourth proportional to 287,235.16, 430,852.40 and 76,867.62 is: 115,301.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,235.16 : 430,852.40 = 76,867.62 : x
  2. Step 2: Convert to fraction form
    287,235.16/430,852.40 = 76,867.62/x
  3. Step 3: Cross multiply
    287,235.16x = 430,852.40 × 76,867.62
  4. Step 4: Simplify right side
    287,235.16x = 33,118,598,559.29
  5. Step 5: Solve for x
    x = 33,118,598,559.29/287,235.16
  6. Step 6: Final answer
    x = 115,301.34

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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.