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Finding the Fourth Proportional to 539,030.40, 809,128.80 and 302,834.40

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Solution

The fourth proportional to 539,030.40, 809,128.80 and 302,834.40 is: 454,579.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,030.40 : 809,128.80 = 302,834.40 : x
  2. Step 2: Convert to fraction form
    539,030.40/809,128.80 = 302,834.40/x
  3. Step 3: Cross multiply
    539,030.40x = 809,128.80 × 302,834.40
  4. Step 4: Simplify right side
    539,030.40x = 245,032,034,670.72
  5. Step 5: Solve for x
    x = 245,032,034,670.72/539,030.40
  6. Step 6: Final answer
    x = 454,579.25

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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.