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Finding the Fourth Proportional to 348,547.60, 522,130.20 and 207,888.40

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Solution

The fourth proportional to 348,547.60, 522,130.20 and 207,888.40 is: 311,420.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,547.60 : 522,130.20 = 207,888.40 : x
  2. Step 2: Convert to fraction form
    348,547.60/522,130.20 = 207,888.40/x
  3. Step 3: Cross multiply
    348,547.60x = 522,130.20 × 207,888.40
  4. Step 4: Simplify right side
    348,547.60x = 108,544,811,869.68
  5. Step 5: Solve for x
    x = 108,544,811,869.68/348,547.60
  6. Step 6: Final answer
    x = 311,420.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.