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Finding the Fourth Proportional to 389,527, 537,547.30 and 210,679

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Solution

The fourth proportional to 389,527, 537,547.30 and 210,679 is: 290,737.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,527 : 537,547.30 = 210,679 : x
  2. Step 2: Convert to fraction form
    389,527/537,547.30 = 210,679/x
  3. Step 3: Cross multiply
    389,527x = 537,547.30 × 210,679
  4. Step 4: Simplify right side
    389,527x = 113,249,927,616.70
  5. Step 5: Solve for x
    x = 113,249,927,616.70/389,527
  6. Step 6: Final answer
    x = 290,737.04

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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.