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Finding the Fourth Proportional to 477,352.85, 715,918.40 and 140,303.34

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Solution

The fourth proportional to 477,352.85, 715,918.40 and 140,303.34 is: 210,422.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,352.85 : 715,918.40 = 140,303.34 : x
  2. Step 2: Convert to fraction form
    477,352.85/715,918.40 = 140,303.34/x
  3. Step 3: Cross multiply
    477,352.85x = 715,918.40 × 140,303.34
  4. Step 4: Simplify right side
    477,352.85x = 100,445,742,512.08
  5. Step 5: Solve for x
    x = 100,445,742,512.08/477,352.85
  6. Step 6: Final answer
    x = 210,422.42

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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.