Home / 389,022,715.18-536,849,741.95-210,406,802.86

Finding the Fourth Proportional to 389,022,715.18, 536,849,741.95 and 210,406,802.86

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Solution

The fourth proportional to 389,022,715.18, 536,849,741.95 and 210,406,802.86 is: 290,360,519.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,022,715.18 : 536,849,741.95 = 210,406,802.86 : x
  2. Step 2: Convert to fraction form
    389,022,715.18/536,849,741.95 = 210,406,802.86/x
  3. Step 3: Cross multiply
    389,022,715.18x = 536,849,741.95 × 210,406,802.86
  4. Step 4: Simplify right side
    389,022,715.18x = 112,956,837,819,915,520
  5. Step 5: Solve for x
    x = 112,956,837,819,915,520/389,022,715.18
  6. Step 6: Final answer
    x = 290,360,519.87

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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.