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Finding the Fourth Proportional to 245,312.70, 367,515.45 and 139,818.30

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Solution

The fourth proportional to 245,312.70, 367,515.45 and 139,818.30 is: 209,468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,312.70 : 367,515.45 = 139,818.30 : x
  2. Step 2: Convert to fraction form
    245,312.70/367,515.45 = 139,818.30/x
  3. Step 3: Cross multiply
    245,312.70x = 367,515.45 × 139,818.30
  4. Step 4: Simplify right side
    245,312.70x = 51,385,385,442.74
  5. Step 5: Solve for x
    x = 51,385,385,442.74/245,312.70
  6. Step 6: Final answer
    x = 209,468.92

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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.