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Finding the Fourth Proportional to 315,389.80, 473,430.30 and 197,194.60

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Solution

The fourth proportional to 315,389.80, 473,430.30 and 197,194.60 is: 296,007.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,389.80 : 473,430.30 = 197,194.60 : x
  2. Step 2: Convert to fraction form
    315,389.80/473,430.30 = 197,194.60/x
  3. Step 3: Cross multiply
    315,389.80x = 473,430.30 × 197,194.60
  4. Step 4: Simplify right side
    315,389.80x = 93,357,898,636.38
  5. Step 5: Solve for x
    x = 93,357,898,636.38/315,389.80
  6. Step 6: Final answer
    x = 296,007.98

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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.