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Finding the Fourth Proportional to 315,007.95, 472,511.93 and 265,800.45

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Solution

The fourth proportional to 315,007.95, 472,511.93 and 265,800.45 is: 398,700.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,007.95 : 472,511.93 = 265,800.45 : x
  2. Step 2: Convert to fraction form
    315,007.95/472,511.93 = 265,800.45/x
  3. Step 3: Cross multiply
    315,007.95x = 472,511.93 × 265,800.45
  4. Step 4: Simplify right side
    315,007.95x = 125,593,882,295.37
  5. Step 5: Solve for x
    x = 125,593,882,295.37/315,007.95
  6. Step 6: Final answer
    x = 398,700.68

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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.