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Finding the Fourth Proportional to 369,685.36, 510,142.04 and 210,699.12

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Solution

The fourth proportional to 369,685.36, 510,142.04 and 210,699.12 is: 290,751.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,685.36 : 510,142.04 = 210,699.12 : x
  2. Step 2: Convert to fraction form
    369,685.36/510,142.04 = 210,699.12/x
  3. Step 3: Cross multiply
    369,685.36x = 510,142.04 × 210,699.12
  4. Step 4: Simplify right side
    369,685.36x = 107,486,478,903.01
  5. Step 5: Solve for x
    x = 107,486,478,903.01/369,685.36
  6. Step 6: Final answer
    x = 290,751.25

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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.