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Finding the Fourth Proportional to 586,288.80, 879,433.20 and 143,056.80

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Solution

The fourth proportional to 586,288.80, 879,433.20 and 143,056.80 is: 214,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,288.80 : 879,433.20 = 143,056.80 : x
  2. Step 2: Convert to fraction form
    586,288.80/879,433.20 = 143,056.80/x
  3. Step 3: Cross multiply
    586,288.80x = 879,433.20 × 143,056.80
  4. Step 4: Simplify right side
    586,288.80x = 125,808,899,405.76
  5. Step 5: Solve for x
    x = 125,808,899,405.76/586,288.80
  6. Step 6: Final answer
    x = 214,585.20

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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.