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Finding the Fourth Proportional to 228,246.90, 342,370.35 and 139,673.40

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Solution

The fourth proportional to 228,246.90, 342,370.35 and 139,673.40 is: 209,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,246.90 : 342,370.35 = 139,673.40 : x
  2. Step 2: Convert to fraction form
    228,246.90/342,370.35 = 139,673.40/x
  3. Step 3: Cross multiply
    228,246.90x = 342,370.35 × 139,673.40
  4. Step 4: Simplify right side
    228,246.90x = 47,820,030,843.69
  5. Step 5: Solve for x
    x = 47,820,030,843.69/228,246.90
  6. Step 6: Final answer
    x = 209,510.10

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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.