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Finding the Fourth Proportional to 143,490, 215,269.58 and 44,994

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Solution

The fourth proportional to 143,490, 215,269.58 and 44,994 is: 67,501.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,490 : 215,269.58 = 44,994 : x
  2. Step 2: Convert to fraction form
    143,490/215,269.58 = 44,994/x
  3. Step 3: Cross multiply
    143,490x = 215,269.58 × 44,994
  4. Step 4: Simplify right side
    143,490x = 9,685,839,482.52
  5. Step 5: Solve for x
    x = 9,685,839,482.52/143,490
  6. Step 6: Final answer
    x = 67,501.84

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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.