Home / 389,583,212-537,641,732.48-215,742,956

Finding the Fourth Proportional to 389,583,212, 537,641,732.48 and 215,742,956

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Solution

The fourth proportional to 389,583,212, 537,641,732.48 and 215,742,956 is: 297,734,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,212 : 537,641,732.48 = 215,742,956 : x
  2. Step 2: Convert to fraction form
    389,583,212/537,641,732.48 = 215,742,956/x
  3. Step 3: Cross multiply
    389,583,212x = 537,641,732.48 × 215,742,956
  4. Step 4: Simplify right side
    389,583,212x = 115,992,416,634,196,416
  5. Step 5: Solve for x
    x = 115,992,416,634,196,416/389,583,212
  6. Step 6: Final answer
    x = 297,734,638.10

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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.