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Finding the Fourth Proportional to 371,587.54, 512,802.90 and 210,439.12

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Solution

The fourth proportional to 371,587.54, 512,802.90 and 210,439.12 is: 290,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,587.54 : 512,802.90 = 210,439.12 : x
  2. Step 2: Convert to fraction form
    371,587.54/512,802.90 = 210,439.12/x
  3. Step 3: Cross multiply
    371,587.54x = 512,802.90 × 210,439.12
  4. Step 4: Simplify right side
    371,587.54x = 107,913,791,009.45
  5. Step 5: Solve for x
    x = 107,913,791,009.45/371,587.54
  6. Step 6: Final answer
    x = 290,412.84

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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.