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Finding the Fourth Proportional to 315,907.20, 473,169.60 and 191,030.40

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Solution

The fourth proportional to 315,907.20, 473,169.60 and 191,030.40 is: 286,127.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,907.20 : 473,169.60 = 191,030.40 : x
  2. Step 2: Convert to fraction form
    315,907.20/473,169.60 = 191,030.40/x
  3. Step 3: Cross multiply
    315,907.20x = 473,169.60 × 191,030.40
  4. Step 4: Simplify right side
    315,907.20x = 90,389,777,955.84
  5. Step 5: Solve for x
    x = 90,389,777,955.84/315,907.20
  6. Step 6: Final answer
    x = 286,127.63

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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.