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Finding the Fourth Proportional to 402,347.70, 603,521.55 and 202,590.90

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Solution

The fourth proportional to 402,347.70, 603,521.55 and 202,590.90 is: 303,886.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,347.70 : 603,521.55 = 202,590.90 : x
  2. Step 2: Convert to fraction form
    402,347.70/603,521.55 = 202,590.90/x
  3. Step 3: Cross multiply
    402,347.70x = 603,521.55 × 202,590.90
  4. Step 4: Simplify right side
    402,347.70x = 122,267,973,983.90
  5. Step 5: Solve for x
    x = 122,267,973,983.90/402,347.70
  6. Step 6: Final answer
    x = 303,886.35

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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.