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Finding the Fourth Proportional to 660,171.88, 911,041.86 and 358,365.88

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Solution

The fourth proportional to 660,171.88, 911,041.86 and 358,365.88 is: 494,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,171.88 : 911,041.86 = 358,365.88 : x
  2. Step 2: Convert to fraction form
    660,171.88/911,041.86 = 358,365.88/x
  3. Step 3: Cross multiply
    660,171.88x = 911,041.86 × 358,365.88
  4. Step 4: Simplify right side
    660,171.88x = 326,486,317,875.74
  5. Step 5: Solve for x
    x = 326,486,317,875.74/660,171.88
  6. Step 6: Final answer
    x = 494,547.45

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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.