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Finding the Fourth Proportional to 438,136.32, 604,080.27 and 365,643.48

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Solution

The fourth proportional to 438,136.32, 604,080.27 and 365,643.48 is: 504,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,136.32 : 604,080.27 = 365,643.48 : x
  2. Step 2: Convert to fraction form
    438,136.32/604,080.27 = 365,643.48/x
  3. Step 3: Cross multiply
    438,136.32x = 604,080.27 × 365,643.48
  4. Step 4: Simplify right side
    438,136.32x = 220,878,012,122.14
  5. Step 5: Solve for x
    x = 220,878,012,122.14/438,136.32
  6. Step 6: Final answer
    x = 504,130.80

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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.