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Finding the Fourth Proportional to 346,709.70, 520,064.55 and 160,085.70

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Solution

The fourth proportional to 346,709.70, 520,064.55 and 160,085.70 is: 240,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,709.70 : 520,064.55 = 160,085.70 : x
  2. Step 2: Convert to fraction form
    346,709.70/520,064.55 = 160,085.70/x
  3. Step 3: Cross multiply
    346,709.70x = 520,064.55 × 160,085.70
  4. Step 4: Simplify right side
    346,709.70x = 83,254,897,531.94
  5. Step 5: Solve for x
    x = 83,254,897,531.94/346,709.70
  6. Step 6: Final answer
    x = 240,128.55

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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.