Home / 389,583,143.50-537,641,637.87-215,742,887.50

Finding the Fourth Proportional to 389,583,143.50, 537,641,637.87 and 215,742,887.50

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Solution

The fourth proportional to 389,583,143.50, 537,641,637.87 and 215,742,887.50 is: 297,734,543.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,143.50 : 537,641,637.87 = 215,742,887.50 : x
  2. Step 2: Convert to fraction form
    389,583,143.50/537,641,637.87 = 215,742,887.50/x
  3. Step 3: Cross multiply
    389,583,143.50x = 537,641,637.87 × 215,742,887.50
  4. Step 4: Simplify right side
    389,583,143.50x = 115,992,359,394,303,152
  5. Step 5: Solve for x
    x = 115,992,359,394,303,152/389,583,143.50
  6. Step 6: Final answer
    x = 297,734,543.52

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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.