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Finding the Fourth Proportional to 358,947.21, 495,346.12 and 197,802.22

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Solution

The fourth proportional to 358,947.21, 495,346.12 and 197,802.22 is: 272,966.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,947.21 : 495,346.12 = 197,802.22 : x
  2. Step 2: Convert to fraction form
    358,947.21/495,346.12 = 197,802.22/x
  3. Step 3: Cross multiply
    358,947.21x = 495,346.12 × 197,802.22
  4. Step 4: Simplify right side
    358,947.21x = 97,980,562,204.39
  5. Step 5: Solve for x
    x = 97,980,562,204.39/358,947.21
  6. Step 6: Final answer
    x = 272,966.50

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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.