Home / 287,901,817.65-397,303,311.68-155,742,488.39

Finding the Fourth Proportional to 287,901,817.65, 397,303,311.68 and 155,742,488.39

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Solution

The fourth proportional to 287,901,817.65, 397,303,311.68 and 155,742,488.39 is: 214,923,986.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,901,817.65 : 397,303,311.68 = 155,742,488.39 : x
  2. Step 2: Convert to fraction form
    287,901,817.65/397,303,311.68 = 155,742,488.39/x
  3. Step 3: Cross multiply
    287,901,817.65x = 397,303,311.68 × 155,742,488.39
  4. Step 4: Simplify right side
    287,901,817.65x = 61,877,006,406,845,504
  5. Step 5: Solve for x
    x = 61,877,006,406,845,504/287,901,817.65
  6. Step 6: Final answer
    x = 214,923,986.63

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.