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Finding the Fourth Proportional to 315,561.60, 473,342.40 and 191,145.60

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Solution

The fourth proportional to 315,561.60, 473,342.40 and 191,145.60 is: 286,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,561.60 : 473,342.40 = 191,145.60 : x
  2. Step 2: Convert to fraction form
    315,561.60/473,342.40 = 191,145.60/x
  3. Step 3: Cross multiply
    315,561.60x = 473,342.40 × 191,145.60
  4. Step 4: Simplify right side
    315,561.60x = 90,477,317,053.44
  5. Step 5: Solve for x
    x = 90,477,317,053.44/315,561.60
  6. Step 6: Final answer
    x = 286,718.40

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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.