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Finding the Fourth Proportional to 245,055.80, 367,802.40 and 211,813.40

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Solution

The fourth proportional to 245,055.80, 367,802.40 and 211,813.40 is: 317,909.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,055.80 : 367,802.40 = 211,813.40 : x
  2. Step 2: Convert to fraction form
    245,055.80/367,802.40 = 211,813.40/x
  3. Step 3: Cross multiply
    245,055.80x = 367,802.40 × 211,813.40
  4. Step 4: Simplify right side
    245,055.80x = 77,905,476,872.16
  5. Step 5: Solve for x
    x = 77,905,476,872.16/245,055.80
  6. Step 6: Final answer
    x = 317,909.13

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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.