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Finding the Fourth Proportional to 249,318,688.40, 373,978,032.60 and 231,178,835.60

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Solution

The fourth proportional to 249,318,688.40, 373,978,032.60 and 231,178,835.60 is: 346,768,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,318,688.40 : 373,978,032.60 = 231,178,835.60 : x
  2. Step 2: Convert to fraction form
    249,318,688.40/373,978,032.60 = 231,178,835.60/x
  3. Step 3: Cross multiply
    249,318,688.40x = 373,978,032.60 × 231,178,835.60
  4. Step 4: Simplify right side
    249,318,688.40x = 86,455,806,116,446,848
  5. Step 5: Solve for x
    x = 86,455,806,116,446,848/249,318,688.40
  6. Step 6: Final answer
    x = 346,768,253.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.