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Finding the Fourth Proportional to 380,368.70, 524,925.20 and 210,602.82

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Solution

The fourth proportional to 380,368.70, 524,925.20 and 210,602.82 is: 290,640.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,368.70 : 524,925.20 = 210,602.82 : x
  2. Step 2: Convert to fraction form
    380,368.70/524,925.20 = 210,602.82/x
  3. Step 3: Cross multiply
    380,368.70x = 524,925.20 × 210,602.82
  4. Step 4: Simplify right side
    380,368.70x = 110,550,727,409.06
  5. Step 5: Solve for x
    x = 110,550,727,409.06/380,368.70
  6. Step 6: Final answer
    x = 290,640.97

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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.