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Finding the Fourth Proportional to 438,382.16, 604,416.60 and 357,727.76

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Solution

The fourth proportional to 438,382.16, 604,416.60 and 357,727.76 is: 493,214.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,382.16 : 604,416.60 = 357,727.76 : x
  2. Step 2: Convert to fraction form
    438,382.16/604,416.60 = 357,727.76/x
  3. Step 3: Cross multiply
    438,382.16x = 604,416.60 × 357,727.76
  4. Step 4: Simplify right side
    438,382.16x = 216,216,596,424.82
  5. Step 5: Solve for x
    x = 216,216,596,424.82/438,382.16
  6. Step 6: Final answer
    x = 493,214.86

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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.