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Finding the Fourth Proportional to 660,328.02, 990,885.51 and 239,636.70

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Solution

The fourth proportional to 660,328.02, 990,885.51 and 239,636.70 is: 359,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,328.02 : 990,885.51 = 239,636.70 : x
  2. Step 2: Convert to fraction form
    660,328.02/990,885.51 = 239,636.70/x
  3. Step 3: Cross multiply
    660,328.02x = 990,885.51 × 239,636.70
  4. Step 4: Simplify right side
    660,328.02x = 237,452,533,694.22
  5. Step 5: Solve for x
    x = 237,452,533,694.22/660,328.02
  6. Step 6: Final answer
    x = 359,597.85

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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.