Home / 287,607,632.40-431,411,448.60-239,777,942.40

Finding the Fourth Proportional to 287,607,632.40, 431,411,448.60 and 239,777,942.40

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Solution

The fourth proportional to 287,607,632.40, 431,411,448.60 and 239,777,942.40 is: 359,666,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,607,632.40 : 431,411,448.60 = 239,777,942.40 : x
  2. Step 2: Convert to fraction form
    287,607,632.40/431,411,448.60 = 239,777,942.40/x
  3. Step 3: Cross multiply
    287,607,632.40x = 431,411,448.60 × 239,777,942.40
  4. Step 4: Simplify right side
    287,607,632.40x = 103,442,949,473,111,376
  5. Step 5: Solve for x
    x = 103,442,949,473,111,376/287,607,632.40
  6. Step 6: Final answer
    x = 359,666,913.60

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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.