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Finding the Fourth Proportional to 443,574.80, 665,459.40 and 144,004.40

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Solution

The fourth proportional to 443,574.80, 665,459.40 and 144,004.40 is: 216,038.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,574.80 : 665,459.40 = 144,004.40 : x
  2. Step 2: Convert to fraction form
    443,574.80/665,459.40 = 144,004.40/x
  3. Step 3: Cross multiply
    443,574.80x = 665,459.40 × 144,004.40
  4. Step 4: Simplify right side
    443,574.80x = 95,829,081,621.36
  5. Step 5: Solve for x
    x = 95,829,081,621.36/443,574.80
  6. Step 6: Final answer
    x = 216,038.16

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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.