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Finding the Fourth Proportional to 500,030.42, 690,043.79 and 270,587.67

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Solution

The fourth proportional to 500,030.42, 690,043.79 and 270,587.67 is: 373,411.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,030.42 : 690,043.79 = 270,587.67 : x
  2. Step 2: Convert to fraction form
    500,030.42/690,043.79 = 270,587.67/x
  3. Step 3: Cross multiply
    500,030.42x = 690,043.79 × 270,587.67
  4. Step 4: Simplify right side
    500,030.42x = 186,717,339,981.13
  5. Step 5: Solve for x
    x = 186,717,339,981.13/500,030.42
  6. Step 6: Final answer
    x = 373,411.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.