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Finding the Fourth Proportional to 500,030.31, 690,043.65 and 270,587.58

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Solution

The fourth proportional to 500,030.31, 690,043.65 and 270,587.58 is: 373,411.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,030.31 : 690,043.65 = 270,587.58 : x
  2. Step 2: Convert to fraction form
    500,030.31/690,043.65 = 270,587.58/x
  3. Step 3: Cross multiply
    500,030.31x = 690,043.65 × 270,587.58
  4. Step 4: Simplify right side
    500,030.31x = 186,717,241,347.87
  5. Step 5: Solve for x
    x = 186,717,241,347.87/500,030.31
  6. Step 6: Final answer
    x = 373,411.85

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1.5x scale

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.