Home / 390,382,068.51-585,574,471.51-99,249,222.64

Finding the Fourth Proportional to 390,382,068.51, 585,574,471.51 and 99,249,222.64

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Solution

The fourth proportional to 390,382,068.51, 585,574,471.51 and 99,249,222.64 is: 148,874,181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,382,068.51 : 585,574,471.51 = 99,249,222.64 : x
  2. Step 2: Convert to fraction form
    390,382,068.51/585,574,471.51 = 99,249,222.64/x
  3. Step 3: Cross multiply
    390,382,068.51x = 585,574,471.51 × 99,249,222.64
  4. Step 4: Simplify right side
    390,382,068.51x = 58,117,811,094,700,080
  5. Step 5: Solve for x
    x = 58,117,811,094,700,080/390,382,068.51
  6. Step 6: Final answer
    x = 148,874,181.95

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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.