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Finding the Fourth Proportional to 318,302.74, 477,352.84 and 105,030.90

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Solution

The fourth proportional to 318,302.74, 477,352.84 and 105,030.90 is: 157,512.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,302.74 : 477,352.84 = 105,030.90 : x
  2. Step 2: Convert to fraction form
    318,302.74/477,352.84 = 105,030.90/x
  3. Step 3: Cross multiply
    318,302.74x = 477,352.84 × 105,030.90
  4. Step 4: Simplify right side
    318,302.74x = 50,136,798,402.76
  5. Step 5: Solve for x
    x = 50,136,798,402.76/318,302.74
  6. Step 6: Final answer
    x = 157,512.93

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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.