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Finding the Fourth Proportional to 315,411.70, 473,117.55 and 203,437.30

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Solution

The fourth proportional to 315,411.70, 473,117.55 and 203,437.30 is: 305,155.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,411.70 : 473,117.55 = 203,437.30 : x
  2. Step 2: Convert to fraction form
    315,411.70/473,117.55 = 203,437.30/x
  3. Step 3: Cross multiply
    315,411.70x = 473,117.55 × 203,437.30
  4. Step 4: Simplify right side
    315,411.70x = 96,249,756,954.62
  5. Step 5: Solve for x
    x = 96,249,756,954.62/315,411.70
  6. Step 6: Final answer
    x = 305,155.95

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1.5x scale

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.