Home / 389,583,138-537,641,630.28-215,742,882

Finding the Fourth Proportional to 389,583,138, 537,641,630.28 and 215,742,882

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Solution

The fourth proportional to 389,583,138, 537,641,630.28 and 215,742,882 is: 297,734,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,138 : 537,641,630.28 = 215,742,882 : x
  2. Step 2: Convert to fraction form
    389,583,138/537,641,630.28 = 215,742,882/x
  3. Step 3: Cross multiply
    389,583,138x = 537,641,630.28 × 215,742,882
  4. Step 4: Simplify right side
    389,583,138x = 115,992,354,799,785,664
  5. Step 5: Solve for x
    x = 115,992,354,799,785,664/389,583,138
  6. Step 6: Final answer
    x = 297,734,535.93

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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.