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Finding the Fourth Proportional to 287,018.04, 430,527.42 and 137,223.12

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Solution

The fourth proportional to 287,018.04, 430,527.42 and 137,223.12 is: 205,834.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,018.04 : 430,527.42 = 137,223.12 : x
  2. Step 2: Convert to fraction form
    287,018.04/430,527.42 = 137,223.12/x
  3. Step 3: Cross multiply
    287,018.04x = 430,527.42 × 137,223.12
  4. Step 4: Simplify right side
    287,018.04x = 59,078,315,817.95
  5. Step 5: Solve for x
    x = 59,078,315,817.95/287,018.04
  6. Step 6: Final answer
    x = 205,834.85

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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.