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Finding the Fourth Proportional to 289,643.04, 399,718.80 and 162,317.52

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Solution

The fourth proportional to 289,643.04, 399,718.80 and 162,317.52 is: 224,004.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,643.04 : 399,718.80 = 162,317.52 : x
  2. Step 2: Convert to fraction form
    289,643.04/399,718.80 = 162,317.52/x
  3. Step 3: Cross multiply
    289,643.04x = 399,718.80 × 162,317.52
  4. Step 4: Simplify right side
    289,643.04x = 64,881,364,313.38
  5. Step 5: Solve for x
    x = 64,881,364,313.38/289,643.04
  6. Step 6: Final answer
    x = 224,004.57

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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.