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Finding the Fourth Proportional to 315,347.40, 473,007.78 and 146,809.80

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Solution

The fourth proportional to 315,347.40, 473,007.78 and 146,809.80 is: 220,208.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,347.40 : 473,007.78 = 146,809.80 : x
  2. Step 2: Convert to fraction form
    315,347.40/473,007.78 = 146,809.80/x
  3. Step 3: Cross multiply
    315,347.40x = 473,007.78 × 146,809.80
  4. Step 4: Simplify right side
    315,347.40x = 69,442,177,580.24
  5. Step 5: Solve for x
    x = 69,442,177,580.24/315,347.40
  6. Step 6: Final answer
    x = 220,208.50

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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.