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Finding the Fourth Proportional to 660,172.25, 911,048.69 and 358,366.25

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Solution

The fourth proportional to 660,172.25, 911,048.69 and 358,366.25 is: 494,551.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,172.25 : 911,048.69 = 358,366.25 : x
  2. Step 2: Convert to fraction form
    660,172.25/911,048.69 = 358,366.25/x
  3. Step 3: Cross multiply
    660,172.25x = 911,048.69 × 358,366.25
  4. Step 4: Simplify right side
    660,172.25x = 326,489,102,602.71
  5. Step 5: Solve for x
    x = 326,489,102,602.71/660,172.25
  6. Step 6: Final answer
    x = 494,551.39

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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.