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Finding the Fourth Proportional to 316,875.40, 475,313.10 and 190,904.20

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Solution

The fourth proportional to 316,875.40, 475,313.10 and 190,904.20 is: 286,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,875.40 : 475,313.10 = 190,904.20 : x
  2. Step 2: Convert to fraction form
    316,875.40/475,313.10 = 190,904.20/x
  3. Step 3: Cross multiply
    316,875.40x = 475,313.10 × 190,904.20
  4. Step 4: Simplify right side
    316,875.40x = 90,739,267,105.02
  5. Step 5: Solve for x
    x = 90,739,267,105.02/316,875.40
  6. Step 6: Final answer
    x = 286,356.30

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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.