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Finding the Fourth Proportional to 660,142.08, 910,998 and 358,336.08

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Solution

The fourth proportional to 660,142.08, 910,998 and 358,336.08 is: 494,504.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,142.08 : 910,998 = 358,336.08 : x
  2. Step 2: Convert to fraction form
    660,142.08/910,998 = 358,336.08/x
  3. Step 3: Cross multiply
    660,142.08x = 910,998 × 358,336.08
  4. Step 4: Simplify right side
    660,142.08x = 326,443,452,207.84
  5. Step 5: Solve for x
    x = 326,443,452,207.84/660,142.08
  6. Step 6: Final answer
    x = 494,504.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.