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Finding the Fourth Proportional to 438,081.12, 604,085.18 and 346,038.62

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Solution

The fourth proportional to 438,081.12, 604,085.18 and 346,038.62 is: 477,164.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,081.12 : 604,085.18 = 346,038.62 : x
  2. Step 2: Convert to fraction form
    438,081.12/604,085.18 = 346,038.62/x
  3. Step 3: Cross multiply
    438,081.12x = 604,085.18 × 346,038.62
  4. Step 4: Simplify right side
    438,081.12x = 209,036,797,299.03
  5. Step 5: Solve for x
    x = 209,036,797,299.03/438,081.12
  6. Step 6: Final answer
    x = 477,164.59

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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.